From 97b4010c536ecd68fc97bf2aa6a67fa84cb76bff Mon Sep 17 00:00:00 2001 From: patrick Date: Sat, 22 Jul 2023 22:43:53 +0000 Subject: [PATCH] Add qcsdam(4), a driver for the PMIC Shared Direct Access Memory found on Qualcomm SoCs. ok kettenis@ --- sys/arch/arm64/conf/GENERIC | 3 +- sys/arch/arm64/conf/RAMDISK | 3 +- sys/dev/fdt/files.fdt | 7 ++- sys/dev/fdt/qcsdam.c | 119 ++++++++++++++++++++++++++++++++++++ 4 files changed, 129 insertions(+), 3 deletions(-) create mode 100644 sys/dev/fdt/qcsdam.c diff --git a/sys/arch/arm64/conf/GENERIC b/sys/arch/arm64/conf/GENERIC index 7b8e6a16422..3b6bc19cf0a 100644 --- a/sys/arch/arm64/conf/GENERIC +++ b/sys/arch/arm64/conf/GENERIC @@ -1,4 +1,4 @@ -# $OpenBSD: GENERIC,v 1.276 2023/07/19 20:27:20 kettenis Exp $ +# $OpenBSD: GENERIC,v 1.277 2023/07/22 22:43:53 patrick Exp $ # # GENERIC machine description file # @@ -343,6 +343,7 @@ qcpon* at qcpmic? qcpwm* at qcpmic? qcrng* at fdt? qcrtc* at qcpmic? +qcsdam* at qcpmic? # Sunxi SoCs sxipio* at fdt? early 1 # GPIO pins for leds & PHYs diff --git a/sys/arch/arm64/conf/RAMDISK b/sys/arch/arm64/conf/RAMDISK index 860174ce50f..a22db00c6cc 100644 --- a/sys/arch/arm64/conf/RAMDISK +++ b/sys/arch/arm64/conf/RAMDISK @@ -1,4 +1,4 @@ -# $OpenBSD: RAMDISK,v 1.208 2023/07/19 20:27:20 kettenis Exp $ +# $OpenBSD: RAMDISK,v 1.209 2023/07/22 22:43:53 patrick Exp $ machine arm64 maxusers 4 @@ -266,6 +266,7 @@ qcpon* at qcpmic? qcpwm* at qcpmic? qcrng* at fdt? qcrtc* at qcpmic? +qcsdam* at qcpmic? # Sunxi SoCs sxipio* at fdt? early 1 # GPIO pins for leds & PHYs diff --git a/sys/dev/fdt/files.fdt b/sys/dev/fdt/files.fdt index fa34dd44f20..af80b6d33b6 100644 --- a/sys/dev/fdt/files.fdt +++ b/sys/dev/fdt/files.fdt @@ -1,4 +1,4 @@ -# $OpenBSD: files.fdt,v 1.195 2023/07/01 16:34:30 drahn Exp $ +# $OpenBSD: files.fdt,v 1.196 2023/07/22 22:43:53 patrick Exp $ # # Config file and device description for machine-independent FDT code. # Included by ports that need it. @@ -761,6 +761,11 @@ device qcrtc attach qcrtc at spmi file dev/fdt/qcrtc.c qcrtc +# Qualcomm PMIC Shared Direct Access Memory +device qcsdam +attach qcsdam at spmi +file dev/fdt/qcsdam.c qcsdam + # TI TPS6598x Type-C controller device tipd attach tipd at i2c diff --git a/sys/dev/fdt/qcsdam.c b/sys/dev/fdt/qcsdam.c new file mode 100644 index 00000000000..309c889b35e --- /dev/null +++ b/sys/dev/fdt/qcsdam.c @@ -0,0 +1,119 @@ +/* $OpenBSD: qcsdam.c,v 1.1 2023/07/22 22:43:53 patrick Exp $ */ +/* + * Copyright (c) 2023 Patrick Wildt + * + * Permission to use, copy, modify, and distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + */ + +#include +#include +#include + +#include +#include + +#include + +#include +#include +#include + +struct qcsdam_softc { + struct device sc_dev; + spmi_tag_t sc_tag; + int8_t sc_sid; + uint16_t sc_addr; + + struct nvmem_device sc_nd; +}; + +int qcsdam_match(struct device *, void *, void *); +void qcsdam_attach(struct device *, struct device *, void *); + +const struct cfattach qcsdam_ca = { + sizeof (struct qcsdam_softc), qcsdam_match, qcsdam_attach +}; + +struct cfdriver qcsdam_cd = { + NULL, "qcsdam", DV_DULL +}; + +int qcsdam_nvmem_read(void *, bus_addr_t, void *, bus_size_t); +int qcsdam_nvmem_write(void *, bus_addr_t, const void *, bus_size_t); + +int +qcsdam_match(struct device *parent, void *match, void *aux) +{ + struct spmi_attach_args *saa = aux; + + return OF_is_compatible(saa->sa_node, "qcom,spmi-sdam"); +} + +void +qcsdam_attach(struct device *parent, struct device *self, void *aux) +{ + struct qcsdam_softc *sc = (struct qcsdam_softc *)self; + struct spmi_attach_args *saa = aux; + uint32_t reg; + + if (OF_getpropintarray(saa->sa_node, "reg", + ®, sizeof(reg)) != sizeof(reg)) { + printf(": can't find registers\n"); + return; + } + + sc->sc_tag = saa->sa_tag; + sc->sc_sid = saa->sa_sid; + sc->sc_addr = reg; + + printf("\n"); + + sc->sc_nd.nd_node = saa->sa_node; + sc->sc_nd.nd_cookie = sc; + sc->sc_nd.nd_read = qcsdam_nvmem_read; + sc->sc_nd.nd_write = qcsdam_nvmem_write; + nvmem_register(&sc->sc_nd); +} + +int +qcsdam_nvmem_read(void *cookie, bus_addr_t addr, void *data, bus_size_t size) +{ + struct qcsdam_softc *sc = cookie; + int error; + + error = spmi_cmd_read(sc->sc_tag, sc->sc_sid, SPMI_CMD_EXT_READL, + sc->sc_addr + addr, data, size); + if (error) { + printf("%s: error reading NVMEM\n", sc->sc_dev.dv_xname); + return error; + } + + return 0; +} + +int +qcsdam_nvmem_write(void *cookie, bus_addr_t addr, const void *data, + bus_size_t size) +{ + struct qcsdam_softc *sc = cookie; + int error; + + error = spmi_cmd_write(sc->sc_tag, sc->sc_sid, SPMI_CMD_EXT_WRITEL, + sc->sc_addr + addr, data, size); + if (error) { + printf("%s: error reading NVMEM\n", sc->sc_dev.dv_xname); + return error; + } + + return 0; +} -- 2.20.1